Sometimes excessive sweating might be genetic or as a result of a health condition.
In those cases there's little one can do to prevent it. But one can still try a thing or two to keep it in check.
-Wear light clothes when going out
- Ensure you stay hydrated. Drink lots of water on a daily basis.
-Avoid hot environments and strenous activities.
Following these tips should help.
drinking water just makes you sweat more :(